Engine-governor.



No. 725,500. PATENTED APR, 14, 1903.

, J. H. SNELL.

ENGINE GOVERNOR.

APPLICATION FILED JUNE 9, 1902.

N0 MODEL, 7 z sums-sum 1v PATENTED APR-l4, 1903.

J. H. SNELL.

ENGINE GOVERNOR.

APPLICATION FILED JUNE 9, 1902.

2 SHEBTSSHEET 2 '50 MODEL.

wit/WWO m: scams PEYERS co wm'nauma. WASHINGTON, uv c UNITED STATES PATENT OFFICE.

JOHN HFSNELL, OF HAMBURG, PENNSYLVANIA, ASSIGNOR TO SNELL AND,

\ MEl-IARG, OF HAMBURG, PENNSYLVANIA, A FIRM.

ENGINE-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. matoaaateu April 14, 11503. Application filed June 9, 1902. Serial No. 110,722. (No model.)

To a whom, it may concern:

Be it known that I, JOHN H. SNELL, a citizenof the United States,.residing at Hamburg, county of Berks, State of Pennsylvania, have invented certain new and useful Improvements in Engine-Governors, of which the following is a specification.

My invention relates to that .classof auto'-.

the novel features are specifically'pointed out in the claims.'-

Figure 1 is an elevation showing the engine-shaft in cross-section on the line 0000 of r Fig. 2, the centrifugal arms and connected rotary sleeve being shown in cut-off position and the position of the pendulum-eccentric merely indicated by dotted lines.

ing in addition the pendulum-eccentric and its guide-sleeve, which are cut awayin Fig. 1, and omitting the pivoted guide-block of the rotary sleeve. Fig. 3 is a frontel'evation showing the eccentric in full-throw position. Fig. 4 shows the guide-block. separately. r

A represents the engine-shaft, to which the governor Wheel or carrier B is secured. V O O are centrifugal arms pivoted to the Wheel B at c (3, respectively, provided with weights 0 c and connected by links D D with a rotary sleeve E, loosely mounted on the hub of the wheel B, so asto be i turned thereon by the movement of the centrifugal arms,which movement is controlled, as usual,

Fig. 2 is a cross-section on the line y y of Fig. 1, showtary sleeve E with its arm g pivoted at g to 0 the wheel B. Its movement across the shaft within the limits permitted by itsslotted or oblong opening g is guided, by flanges 72 and h on sleeve I-I, carried by the shaft. The eccentric. strap and rod employed, as usual, to convey ovement from the eccentric to the valve arenot shown. v My invention consists, essentially, in the improved means provided for operating the pendulum eccentric from the centrifugal 6o arms 0 0 through the rotary sleeve E to automatically vary its throw. In. order to transmit movement from the rotary sleeveE to the eccentric, I provide a lateral projection on "the former near its periphery to operatively. 65.

engage the eccentric. I arrange that the path 10 of this projection when the latter is turned with the sleeve E shall intersect the arc p in which the pendulum eccentric swings, and I provide this; eccentric on its inner face with a slideway G, arranged at' an incline, as shown, to said paths p and 10. This slideway on the eccentric is preferably formed by a guide-bar integral with or rigridly secured to it, and the engaging projection on the rotary sleeve consists, as shown, of a grooved block F, pivotally secured thereto by means of a cylindrical shank f, rotatably mounted in a lateral perforation e" in said sleeve E.

In operation the movement of the centrifu- .gal arms 0 C eitheroutward or inward through the links D D, turns the sleeve E, and the projecting block F, pivotallycarried by the latter and engaging the slide-bar G of the eccentric G, moves the latter in one direction or the other, as the casejmay be, across the shaft A, thus changing the throw of the eccentricas required. 'The inclined arrangement of the slideway G allows the moving the valve, thereby insuring positive 9 5,

action upon the valve,

It is evident that the form of the slideway on the eccentric and of the engaging projection on the rotary sleeve may be changed and the construction otherwise modified without departing from my invention.

What I claim is- 1. The combination with the governor wheel or carrier and the centrifugal arms, of a pendulum-eccentric provided with an inclined slideway extending across the arc in which said eccentric swings, and a loose sleeve rotatively connected to said arms and operatively engaging said slideway to shift the eccentric whereby the latter is locked against movement due to the valve-operated strain thereon, substantially as set forth.

2. The combination with the governor wheel or carrier and the centrifugal arms, of aloose sleeve rotatively connected to said arms and provided with a lateral projection near its periphery, and a pendulum-eccentric provided with a slideway engaging said sleeve projection, the latter being arranged to swing in an are approximately at right angles to that in which the eccentric swings and said slideway being inclined to both of said arcual paths substantially as and for the purpose set forth.

3. The combination with the governor wheel or carrier and the centrifugal arms, of a loose sleeve rotatively connected to said arms and provided with a laterally-projecting grooved guide-block pivoted thereto, and a pendulum-eccentric provided with a relatively fixed slideway arranged at an incline to the arcual path of said pivoted guide-block and operatively engaged by the latter substantially as and for the purpose set forth.

In testimony whereof I affix my signature in the presence of two witnesses.

JOHN H. SNELL.

Witnesses:

GEO. F. MEHARG, WM. A. EVANS. 

